Implementation of Logical Functions in the Game of Life

The Game of Life cellular automaton is a classical example of a massively parallel collision-based computing device. The automaton exhibits mobile patterns, gliders, and generators of the mobile patterns, glider guns, in its evolution. We show how to construct basic logical perations, AND, OR, NOT in space-time configurations of the cellular automaton. Also decomposition of complicated Boolean functions is discussed. Advantages of our technique are demonstrated on an example of binary adder, realized via collision of glider streams

Artificiality in Social Sciences

This text provides with an introduction to the modern approach of artificiality and simulation in social sciences. It presents the relationship between complexity and artificiality, before introducing the field of artificial societies which greatly benefited from the computer power fast increase, gifting social sciences with formalization and experimentation tools previously owned by "hard" sciences alone. It shows that as "a new way of doing social sciences", artificial societies should undoubtedly contribute to a renewed approach in the study of sociality and should play a significant part in the elaboration of original theories of social phenomena.artificial societies; multi-agent systems; distributed artificial intelligence; complexity

Indian Law and the Miner\u27s Canary: The Signs of Poison Gas

In this fiftieth Cleveland-Marshall lecture I want us to look at some present day examples of Felix Cohen\u27s contention that our treatment of Indians - Indian law itself - acts as a barometer, a miner\u27s canary for society. I want to do this by first looking in detail at the Wisconsin Indian Fishing Rights question and then very briefly at several recent Supreme Court cases in the field of Indian Law particularly the Smith and Duro cases. I believe they do not bode well for any of us. In this brief time I have tried to cover too much but it was my only chance at you, my only time at bat in this land of the Cleveland Indian. I hope, today, you have learned a little something about the principles of the field we call Indian law. I have tried to present the Native American as a living, twentieth century soul with great needs, unparalleled opportunities and unequalled adversity, and I have further suggested that the collective fate of all of us is interwoven. The experience of the Native American suggests that we must constantly check for poisonous gas in our democratic Republic